Dehydrating-machine for desiccating liquids.



1. cose'n & b. G. PUTNAM. DEHYDRAING MACHINE FOR DESICCATING LIQUIDS.

APPLICATION HLED FEB. 2| 19|]- Patenwd Mar. 12, 1918.

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UNITED STATE-s 'PATENT `carica.

THOMAS J'. COSTER AND DANIEL G. PUTNAM, OF CHICAGO, ILLINOIS.

nEHYnnATrNG-MACHINE Fon nnslccafrms LIQUID'S.

Patented Mar. 12, 191s.

appneaaon mea February 2, 1917. seriainaueau.

To all whom z't may concern:

Be it known that we, THOMAS J OosTnn and `DANIEL G. PUTNAM, citizens of the United States, all residing at Chicago, in the countyof Cook and State of Illinois, have invented certain new and useful Improvements in Dehydrating-Machines for. Desiocatin Liquids, of which the following is a speci cation.

Our invention relates to improvements in dehydrating machines fordesiccating food products and especially liquids, such as milk,

- or the like.

One of the objects of our invention is to provide a machine wherebyto remove the moisture frommilk and other similar liquids or semi-liquids by application of heat, with out subjecting the moisture laden liquid, or

' theproducts therefrom, to the gases arising from combustion, of 'the fuel employed to produce the heat. I r

Another object .of our invention is to increasethe operative efficiency of such machines by utilizing the heat energy contained in the gases after they have passed through the machine by returning them to the original source of heat to be again passed through the machine. y

And still another object .of our invention is to regulate the generating effect of the heat-producing'furnace by varying the proportionate quantities of the heated gases and fresh air admitted to the furnace.

Other, further and more specific 'objects ofvour invention will become readily apparent, to persons skilled in the art, from a consideration'of the following-description when taken in conjunction with the drawings, wherein Figure -1 is a side elevation of themachine.

Fig. 2 is an enlarged end elevation showing parts 1n section, taken on line 2-2 of Fig. 3. l

' Fig'. 3 is a vertical axial section taken' on line 3 3 of Fig. 2.- Y

In all the views the same reference characters are employed to indicate similar parts.

In the embodiment of the accompanying exemplification 5 is a substantially air-tight casing supported upon brackets 6 and 7, on the floor A8. The bottqmand top portions of the casing are hopper like, as at 9 and 10,

each terminating in a ipe 11 and 12, respectlyely. One fixed wa 13 vofthe casing is disk formed, and is provided on its perimeter withsurfaces -14 for a ball bearlng and 1s supportedu on and maybe a part of the standard 1 5. nother standard 16 is spacedapart from the standard 15. l The two standards support the stationary shaft 17, which 1s fixed to the standard 16 by a set screw 18, o r otherwise. A A drum 20 is rotatable within the casin 5, and is rovided with a relatively sti wall or dis member 21 that terminutes axially in a bearing 22 rotatable upon the fixed shaft 17 The peripheral wall 2'3 of thedrum 20 is connected to lthe disk or radial wall 21, and to another similar,

28 is secured to the outwardly extendingv hub ofthe bearing 22 and by this means the inner drum 20 may be rotated upon the jshaft 17 Vand the ball bearing 27.- The outer casing 5 may be made in tWo parts, the upper and lower part, each provided'with a flange and connected together by bolts, as at 30, in orderthat the drum 20 lmay convenientgly be placed within the casing 5.

A conveyer 31 passes through the stationary disk 1 3 o f the 'outer casing and into the inner ddrum 20,immediabely a ove' the shaft 17. 'lhe bottom wall 32 of the conveyer, is supported-upon the stationary shaft 17, as b means ofrings 33 and 34. That portion oil the conveyer extending drum. is inclosed 'in` a -casing 3 6. The con veyer shaft is supported upon a standard 37 and rotated-by a pulley 38, supplied from a source of power not shown. The outer end of the casinBB-is connected to a reservoir 39 by a s ort vertical pipe 40. scraper 41 extends radially` from the conveyer 31 andsubstantially from the bottom outside Aof the- Wall 32 into contact withthe inner surface of the-circumferential wall 23 of the drum 20, as at 42. Itis held firmly against the inner `surfacevof the rotating drum by a spring for maintaining -it in proper contact therewith. The spring 43 may be secured to the 43 or in any otherV suitable mannerl stationary shaft 1.7 and the rotation of the Aiwi-ny `train of miter shaft 17 will vary the tension of the spring 43. A pipe 44 extends into the rotatable drum 20, and through the stationary wall 13 of the outer casing 5, having its other end connected to anl air. pump 45 for eX- hausting air vapors and moisture-fromthe interior of the rotating drum 20; The means.

for operating the pump 45 may be supplied end in a'hopper like wall 46-to whicha pipe 47 isconnected. A dampen,4 or valve -48, is included within the 'pipe toshut oi the casing-39 `from another 4siriiilar casingor reservoir 49. The reservoir 49 'isconnected by a pipe 50 to a disintegrator 52 supplied with power fromthe shaft 53 through the ears 54. Anothervalye or damper 55 is p olf, the reservoir 49 from the disintegrator.

' A discharge pipe 56 leads' from the disintegrator to' communicatewith any yreceptacle 'iiwhch the nished products are to e deposited. l

Connected. to theulowe' end'of the ipe lltis a 4furnace 57, for burning a suitab e or a propriate fuel to provide-the desired heat. T e products of combustion .pass from the I .furnace 57 throughtheppipe 11, and into the casin `5, around the rotatable drum 20, thus heating the peripheral' surface or wall 23 of 'the drum, after which they find their exit through the pipe 12, beyond the damper .5 8, when the damper is iii open positibn to permit :their exit, or back throu li the 'pipe' 59 Vand'V through the fan' 60 to t ie furnace 57 and preferably below the grate' that is contained 'in the' furnace for the support of the fuel, when the damper 58 islv closed or partly; closed.' A damper 61 A rvides `means for admitting a greater or less yquantity of fres air into the pipe-59 and a 1'damper 52 r trictsrthepassage of the'air andVA gases comin-g from the fan 60, "45

into' the furnace; When the daiiiparsl 58 .and 61 are open-a smaller quantity, ofthe products ofcombu'stionare passer). backinto e casing 5 and j when'these damper-sare closed a greater 6.o

'quantity' of ythe X cated; products of :conibusti-on will f ""inedbyithe samemeeiis.

[The liquid l Whichjpasses-tlirbugh isili orlyvall ,'13, Y audi extends lthe stationaryff to be desiccated is pumped with'some oi-es-` well known source -of pouver. 4The `reservoir casing 39 terminatesat its. bottom acedY in the pipe 50 to shut sure through the pipe 70 and sprayed by the nozzles 73 and 74 into contact with the inner surface of the heated Wall 23 of the rotating drum. As the drum is rotating in the direction of the arrow, shown in Fig. 2,

`the scraper 41 will scrape the deposited solid matter from the milk, from the Wall 23, and afterbeng liberated it will pass down the an larly. inclined Wallof the scraper into t e conveyer 31 4frpmhvwhence Vit will be conveyed intoV thefreseryoir-39a The moisture, liberated by the milk striking the hot wall of the rotating drum 23, is pumped from the drum through the pipe 44,

and th capacity of the pump is such as to tend to maintain a vacuum in thedrum, the- ,effect of which contributes toward the deposit'of the solid matters of the liquid upon the hot surfaces of the drum.

When the reservoir 39 is being'. filled the damper. or valve 48,

is closed, and when it is desired to remove the material deposited in; the reservoir `39, the valve 55 is closed les lWhile we have herein showna single eml bodiment of our invention, forgthe-.purposc Vof clear disclosure, it is manifestthat many changes in general form,- arrangement and yconf ation 'of the parts may be 4made within the spirit and scope of the appended claims.

Having described our invention, what we claim is 1. A machine of the character described comprising a stationary cylindrical casing, means to supply heated' 4gas tov `theiinteror of the casing, a rotatablefsrhaft passing 1 therethrough,a drum, within the .casing an secured at one end tothe shaft,3a stationary disk at the other end, an. annular ring carried at the disk end of the drum and journaled'on the disk, a fluid feed pipe passing scraper carried by the disk for coperation with the inner wall of the drum, and a c'on` veyer carried bythe diskV for coperation -iio' `through the disk for coating the interior l -of the drum. With a fluidto. be dried, a

iis

with the scraper to removfetlie,driedy materialto the exterior of the; casing.

i 2. machine of thelcliaracte .desil'bdcomprising .a stationary cylindrical casing, lmeans to supply heated as to the interior bf lthe casing, a rotata le. shaft passing therethrough, a drum within the casingy and `securedat one end to the shaft, a stationary disk at the other end, abearing in said d for one end of the shaft, an annular ring carried at the disk end of the drum and ating with the scraper to remove the dried journaled on the disk, a Huid feed pipe passmaterial through the exterior of the casing. ing through the disk for coating the in- In testimony whereof we hereunto set our 1 terior of the drum with a Huid to be dried, hands.

a scraper carried lby the disk for coperl ation .with the inner wall of the drum', and THOMAS J. COSTER.

a. conveyer carried by the disk and coper- DANIEL G. PUTNAM. 

